. Made of high-quality materials for enhanced durability. This tank reduces up to 99% of odor-causing bacteria, mold, and algae growth. This humidifier demineralization cartridge helps prevent and reduce white dust caused by minerals in hard water, such as calcium and lime. Demineralization filters help extend the life of your humidifier, purify water, and prevent odors. Compatible with models: UHE-CM65, UHE-WM70, UHE-OC1, UHE-HDC4, UHE-CM45B, HE-CM25, UHE-CM25, UHE-WM16, UHE-OW14, UHE-WM85. Fits evaporative, warm mist, and cool mist ultrasonic humidifiers. Works with all 1-gallon or larger ultrasonic humidifiers. Each demineralization cartridge lasts for 30–40 full tank uses. Simply place one cartridge into your humidifier tank. Suitable for humidifiers with tanks up to 1 gallon in capacity. Replace every 30–60 days. Color: As shown Material: Plastic Size: 4.57 x 2.28 cm Package contents: 10 x Humidifier tank cleaning cartridges Note: Screen settings and lighting may cause slight color variation from the actual product. Measurement tolerance: ±1–3 cm.